Spring is finally here and it’s the best time to work on the lawn you’ve always wanted. We thought it’d be a good idea to cover San Marcos lawn watering and how to schedule it.

We often get asked, “how often should I water my grass?”.

Well, to start off, there is no schedule for watering because there are so many factors to consider like last rainfall, humidity, soil content, and so on. Most homeowners actually overwater their lawn, which isn’t good for your lawn or your pocket. Here in San Marcos we’re fortunate enough to have excellent weather but that doesn’t mean it’s hands off for us.

There are multiple factors to take into consideration when deciding how much and how often to water. It all boils down to your environment – so let’s dig in!

What’s in Your Soil?

There are three soil types: clay, sand, and loam. It’s important to know what’s present in your lawn as this is a good indicator of how much water your lawn will need. Each soil type holds a different amount of water and will require a unique watering schedule.

Clay retains moisture, which means once it’s wet it will stay wet BUT it does take some time for water to seep into clay. So be sure not to apply too much at once otherwise you’ll have runoff.

Sand holds less moisture as it doesn’t have much organic matter. You may need to water more often because water will seep through faster.

Loam is a mix between sand and clay, so it holds a moderate amount of water and won’t need watering so often.

If you’re not sure what you have (don’t worry, most people don’t), we can assess your lawn to put you on the right track. Even throughout New Braunfels, Kyle, and San Marcos there are a wide range of soil types – which we can identify for you or you can do some simple tests yourself.

What Kind of Grass Grows in Your Lawn?

We don’t want to overcomplicate things, so we made this simple table which covers drought tolerance of different grass species specifically for Central Texas. More drought tolerant means LESS watering on your end.

Important Care Practices that Supplement San Marcos Lawn Watering

Here are a few of the most important lawn care practices to include with efficient watering.


The more often you mow, the thicker your grass will be. Plus, with a thicker lawn less water will evaporate which means more efficient watering. Keep in mind to cut only one-third of the length of your grass at any one time. The reason for this is that it helps promote deep roots for your grass. The deeper the roots, the more available water there is for them. This is especially important for the summer months here in Central Texas and will help prevent your lawn from being scorched.

Fertilization – Do You Do It?

Maybe you’re thinking, “how does fertilizer make a difference in my watering schedule?”

Simple. A well fertilized lawn will be healthier in having more shoot and root growth. Again, deeper roots are able to tap into more water. The deeper your roots the more drought resistant your grass will be. That’s why with freshly laid sod you have to keep it moist, because it has yet to establish roots.

A lot of people assume that here in Central Texas you don’t need to fertilize because of how green the area is, but that is far from the truth. There are only so many available nutrients in your lawn and eventually your grass will need to be supplemented.

If you’ve never fertilized, but have questions feel free to reach out. Not every lawn needs the same nutrients. We can diagnose and customize a plan for for your lawn.

Read our guide to fertilizing San Marcos lawns.

Thatch Can Choke Your Lawn

Thatch is the layer of dead leaves, stems, and roots between the base of your grass and the top of your soil. It’s all the brown you see when you take a deeper look into your grass.

It’s not bad – eventually it’ll break down into organic nutrients to feed the soil (which is great!) BUT too much buildup can block water from being absorbed into the soil and instead ends up in the street. This indicates that your lawn needs to be aerated.

Aeration can greatly reduce thatch buildup as well as soil compaction. It pulls small plugs of soil from your lawn allowing more airflow and ease for water to penetrate. Just because you have runoff don’t chalk it up to thatch build up, it could be a case of having more clay in your soil which isn’t able to handle large volumes of water all at once. Our lawn experts can tell you exactly what your lawn needs.

San Marcos Lawn Watering Schedule?

We truly wish it was as simple as, “water every Monday and Thursday”. With that mindset, it will be just as easy to overwater or underwater your lawn. You and I both know that Central Texas’ weather changes like no other.

Don’t worry! It’s not difficult but it will require being a bit more aware of your surroundings.

If it’s dry, hot, or windy, you will need to water more often because you’ll be losing a lot of the water due to evaporation. The opposite will be true for more humid, cool and calm days. When you water, water DEEP. With this practice you should average watering every 5 days or so.

It’s best to water once your grass begins to show signs of drought stress. At this point, the grass will appear more dull and not bounce back quickly once it’s been stepped on.

Early morning is the best time to water your lawn because of the cooler temperatures. Second best would be in the evening. We’d recommend morning watering, because water droplets being on your leaves overnight may lead to disease issues.

Also, if you begin to have any runoff from your lawn, stop watering. Give the soil some time to absorb water and begin watering again.

San Marcos Lawn Watering is EASY

Watering is EASY once you know what you’re dealing with. This article isn’t meant to overwhelm you with possibilities, but to help give you answers to any issues you may come across. There’s no one “way” to water your lawn. As we just covered, there are many environmental factors to take into consideration. The most important thing to remember is that there is no set day to water, ALWAYS look for signs of drought before watering. This is the first step to establish a beautiful green lawn – read through our blog for even more tips.


If you need it, we’re here to help!